MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for extreme operating temperatures ranging from -65 °C to 200 °C. These harsh environment thin-walled connectors come in various mounting options like front wall mount, rear wall mount, jam nut, and box mount receptacles. Offered in 9 shell sizes with 52 insert arrangements, they use M39029 rear release crimp contacts, suitable for aerospace and military applications. With aluminum shells and plating options including cadmium-free finishes, such as electroless nickel, they ensure reliable performance in demanding environments. The keyway polarization, service rating, and contact gender are specified for easy identification and compatibility. Meeting MIL-DTL-38999 II standards, these connectors are built for durability, with a mating life of 500 cycles and an ingress protection rating for environmental resilience.
